US 2019/0291377 A1 · SHEET FOLDING DEVICE AND METHOD, AND BOX-MAKING MACHINE

Abstract

A sheet folding device and method, and a box-making machine, wherein are provided a molding belt for moving on a center side in the width direction of a cardboard sheet toward a downstream side in a transfer direction of the cardboard sheet and thereby pressing and folding both end parts in the width direction of the cardboard sheet from the outside, and a folding roller group formed by folding rollers for contacting insides of fold parts on both sides in the width direction of the cardboard sheet more toward the center in the width direction of the cardboard sheet than the molding belt, the folding rollers being arranged further upstream in the transfer direction of the cardboard sheet than a 90-degree folding position of the cardboard sheet.

Claims10

Dependent claims

A sheet folding device comprising:

forming belts which are disposed on both sides in a transfer direction of a corrugated fiberboard and move to a center side in a width direction of the corrugated fiberboard toward a downstream side in the transfer direction of the corrugated fiberboard so as to press and bend both end portions of the corrugated fiberboard in the width direction from outside;
and
forming rollers which are disposed on the center side in the width direction of the corrugated fiberboard from the forming belts on both sides in the transfer direction of the corrugated fiberboard and come into contact with inner sides of both bending portions of the corrugated fiberboard in the width direction,
wherein the forming rollers are disposed on an upstream side in the transfer direction of the corrugated fiberboard from a 90° bending position of the corrugated fiberboard.

1 more element

Dependencies are inferred from the claim text.

Sheet folding device and method, and box-making machine

Life of this patent

Sheet folding device and method, and box-making machine

Life of this patent

Abstract

Claims10